Christopher, fifteen years old, has an extraordinary brain – exceptional at maths while ill-equipped to interpret everyday life. When he falls under suspicion of killing Mrs Shears' dog Wellington, he records each fact about the event in the book he is writing to solve the mystery of the murder. But his detective work, forbidden by his father, takes him on a frightening journey that upturns his world.
Luke Treadaway
as Christopher Boone
Niamh Cusack
as Siobhan
Paul Ritter
as Ed
Nicola Walker
as Judy
Una Stubbs
as Mrs Alexander/Voice Six/Ensemble
Sophie Duval
as Mrs Shears/Mrs Gascoyne/Voice One/Ensemble
Nicholas Sidi
as Mr Shears/Mr Wise/Duty Sergeant/Voice Two/Ensemble
Matthew Barker
as Mr Thompson/Policeman/Voice Three/Ensemble
Rhiannon Harper-Rafferty
as No. 44/Punk Girl/Voice Five/Ensemble
Howard Ward
as Reverend Peters/Rhodri/Uncle Terry/Voice Four/Ensemble
